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Pontiac Repair/rear brakes


QUESTION: rear brake locks up and then releases and sounds like abs chatter, this happens without warning while driving and touching the brake. need help? almost thrown off road.

ANSWER: Hi dave:

model and year of car/suv? Any Anti lock warning lamps on?

---------- FOLLOW-UP ----------

QUESTION: Vehicle 2000 pontiac Montana, no lamps on, turned off traction control no effect.


a few things couls be going on here. if your lucky it's just a bad set of rear brake shoes and fater dittin in damp weather they absorb the moisture when they cool off and sit and when you step on the brake pedal the mositure absorbed causes the shoes to grab the drums. next thing could be leaking wheel cylinders (very likely) and the brak fluid has been absorbed into the sho material  and same thing as the first with the moisture the shoes grab the drums. Last thin is still wheel cylnder related is that the cylinders are seized up and when you let off the pedal the shoes are dragging and then grab the drums too fast. it's one of those 3 things going on. the fact that you turend the traction control off and it still does it would indicate a base brake issue. good luck ;-)

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Todd Puccio


General auto repair,electrical issues,driveability issues,anti-lock brakes,SIR systems,HVAC,engine performance,Gm specific. I have worked at my current dealership since the 1990 model year anything much older than that I have limited exposure to. I do not have very much transmission experience so those question you may want to ask of another expert. When you send me a question let me know the exact make/model/engine and year for the car or suv you have it makes it easier to answer the questions that way. If your happy with the answer I gave you please feel free to Donate. This is a free service to you and I am not compensated at all by this web site. I have 22 years of experience to share with you and my knowledge wasn't free to me. I had to pay for my education.


Experience in the area: I have been a technician in GM dealerships for over 22 years and I am a ASE master technician. I work at a Buick and GMC truck store Previously I worked at a Pontiac GMC store for 18 years. I Served a a lead technician when dealership was on a team system. I just recently moved to a Buick,Hummer,Saab Store when my franchise was purchased by this dealership. Organizations: ASE master technician


Education/Credentials:High school diploma,2 year vocational school degree 2 year college degree. Associates degree in applied sciences (auto technology)Awards and Honors: GMC master technician

Awards and Honors
Master GMC truck technician Master ASE technician in 9 categories

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